the blower motor module, which I'm guessing you lost a few intermittent speeds or only have full speed fan is under the passenger side glove box, you remove the trim pieces holding the kick panel then you can easily see the module, it is held by two screws and two connectors, one connector that connects it to the vehicle and one to motor.
My 2005 does the same thing, just found out it's the blower motor control module. Hope that helps out!!
Resistor or blower motor power module.
Blower resistor is behind the blower motor up against the firewall you can see wires hanging down from it. (Mite be called blower control module in 2005 models.)
It may only be the resistor pack or the resistor module depending upon your climate control type.
The blower motor resister is located just to the left of the blower motor on the passengers side right below the blower motor return air tube.......
It is behind the glove box
Remove the wiring harness from the back of your 2005 Chevy Cavalier heater blower motor. Remove the heater blower motor retaining bolts. Remove the heater blower fan.
The 2005 Lesabre has the blower motor mounted under the dash. It is under the glove box on the firewall behind a panel.
Replace the blower motor resistor.
To replace the blower motor 2005 Ford Focus, you have to see the attached instructions on the manual. A screwdriver will help you remove the screw.
The 2005 Ford F1 50 pickup truck blower motor resistor pack can be found on the firewall in the engine compartment. The blower motor resistor pack is on the passenger side of the firewall.
the blower is located behind the clove box, you have to remove the clove box to remove the blower.